6440276 has 12 divisors (see below), whose sum is σ = 11760672. Its totient is φ = 3080088.

The previous prime is 6440249. The next prime is 6440303. The reversal of 6440276 is 6720446.

It is an interprime number because it is at equal distance from previous prime (6440249) and next prime (6440303).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34910 + ... + 35093.

It is an arithmetic number, because the mean of its divisors is an integer number (980056).

Almost surely, 2^6440276 is an apocalyptic number.

It is an amenable number.

6440276 is a deficient number, since it is larger than the sum of its proper divisors (5320396).

6440276 is a wasteful number, since it uses less digits than its factorization.

6440276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70030 (or 70028 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 6440276 is about 2537.7698871253. The cubic root of 6440276 is about 186.0522071817.

The spelling of 6440276 in words is "six million, four hundred forty thousand, two hundred seventy-six".